./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e095bb5ea0d924a9f9ab04ab393eec77de9b1aa4e50357711d33ebab16e651dd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:56:17,242 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:56:17,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:56:17,282 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:56:17,283 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:56:17,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:56:17,286 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:56:17,288 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:56:17,291 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:56:17,292 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:56:17,293 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:56:17,295 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:56:17,296 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:56:17,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:56:17,299 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:56:17,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:56:17,303 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:56:17,304 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:56:17,307 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:56:17,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:56:17,312 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:56:17,314 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:56:17,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:56:17,317 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:56:17,321 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:56:17,328 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:56:17,328 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:56:17,329 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:56:17,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:56:17,331 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:56:17,331 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:56:17,332 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:56:17,333 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:56:17,334 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:56:17,336 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:56:17,336 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:56:17,337 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:56:17,337 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:56:17,338 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:56:17,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:56:17,340 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:56:17,344 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 00:56:17,391 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:56:17,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:56:17,394 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:56:17,394 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:56:17,395 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:56:17,395 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:56:17,395 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 00:56:17,396 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:56:17,402 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:56:17,402 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 00:56:17,403 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 00:56:17,404 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:56:17,404 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 00:56:17,404 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 00:56:17,404 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 00:56:17,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:56:17,406 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 00:56:17,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 00:56:17,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 00:56:17,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:56:17,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:56:17,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:56:17,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:56:17,407 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:56:17,407 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 00:56:17,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:56:17,408 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:56:17,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:56:17,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:56:17,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:56:17,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:56:17,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:56:17,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:56:17,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:56:17,412 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 00:56:17,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 00:56:17,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:56:17,412 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:56:17,412 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:56:17,413 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e095bb5ea0d924a9f9ab04ab393eec77de9b1aa4e50357711d33ebab16e651dd [2021-11-07 00:56:17,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:56:17,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:56:17,746 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:56:17,747 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:56:17,748 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:56:17,749 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-2.i [2021-11-07 00:56:17,836 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/data/d88e0d73d/f597fa228eeb484284974830226636ce/FLAG9f1edce81 [2021-11-07 00:56:18,538 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:56:18,540 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-2.i [2021-11-07 00:56:18,567 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/data/d88e0d73d/f597fa228eeb484284974830226636ce/FLAG9f1edce81 [2021-11-07 00:56:18,710 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/data/d88e0d73d/f597fa228eeb484284974830226636ce [2021-11-07 00:56:18,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:56:18,714 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:56:18,716 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:56:18,716 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:56:18,719 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:56:18,720 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:56:18" (1/1) ... [2021-11-07 00:56:18,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1219571b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:18, skipping insertion in model container [2021-11-07 00:56:18,721 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:56:18" (1/1) ... [2021-11-07 00:56:18,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:56:18,778 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:56:19,268 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-2.i[33021,33034] [2021-11-07 00:56:19,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:56:19,449 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 00:56:19,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6f45cf44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:19, skipping insertion in model container [2021-11-07 00:56:19,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:56:19,451 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 00:56:19,465 INFO L168 Benchmark]: Toolchain (without parser) took 737.73 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 78.8 MB in the beginning and 97.7 MB in the end (delta: -18.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 00:56:19,465 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 113.2 MB. Free memory is still 66.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:56:19,467 INFO L168 Benchmark]: CACSL2BoogieTranslator took 735.01 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 78.3 MB in the beginning and 97.7 MB in the end (delta: -19.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 00:56:19,468 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 113.2 MB. Free memory is still 66.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 735.01 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 78.3 MB in the beginning and 97.7 MB in the end (delta: -19.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 752]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e095bb5ea0d924a9f9ab04ab393eec77de9b1aa4e50357711d33ebab16e651dd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:56:21,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:56:21,704 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:56:21,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:56:21,766 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:56:21,770 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:56:21,772 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:56:21,777 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:56:21,780 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:56:21,788 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:56:21,789 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:56:21,791 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:56:21,792 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:56:21,794 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:56:21,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:56:21,801 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:56:21,802 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:56:21,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:56:21,806 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:56:21,813 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:56:21,815 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:56:21,816 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:56:21,820 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:56:21,821 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:56:21,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:56:21,831 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:56:21,831 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:56:21,833 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:56:21,834 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:56:21,835 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:56:21,835 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:56:21,836 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:56:21,838 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:56:21,839 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:56:21,841 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:56:21,841 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:56:21,842 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:56:21,842 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:56:21,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:56:21,844 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:56:21,845 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:56:21,846 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 00:56:21,887 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:56:21,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:56:21,889 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:56:21,889 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:56:21,889 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:56:21,890 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:56:21,890 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:56:21,890 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:56:21,890 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:56:21,892 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:56:21,892 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 00:56:21,893 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 00:56:21,893 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:56:21,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:56:21,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:56:21,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:56:21,894 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:56:21,894 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 00:56:21,894 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 00:56:21,894 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 00:56:21,894 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:56:21,894 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:56:21,895 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:56:21,895 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:56:21,895 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 00:56:21,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:56:21,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:56:21,896 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:56:21,896 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:56:21,896 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:56:21,896 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 00:56:21,896 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 00:56:21,897 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:56:21,897 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:56:21,897 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:56:21,898 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e095bb5ea0d924a9f9ab04ab393eec77de9b1aa4e50357711d33ebab16e651dd [2021-11-07 00:56:22,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:56:22,326 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:56:22,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:56:22,330 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:56:22,332 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:56:22,335 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-2.i [2021-11-07 00:56:22,408 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/data/1417a2ddf/cd7bf08e336845b186545dad74b3d0a5/FLAGf97230cb8 [2021-11-07 00:56:23,151 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:56:23,151 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-2.i [2021-11-07 00:56:23,169 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/data/1417a2ddf/cd7bf08e336845b186545dad74b3d0a5/FLAGf97230cb8 [2021-11-07 00:56:23,314 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/data/1417a2ddf/cd7bf08e336845b186545dad74b3d0a5 [2021-11-07 00:56:23,317 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:56:23,318 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:56:23,320 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:56:23,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:56:23,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:56:23,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:56:23" (1/1) ... [2021-11-07 00:56:23,326 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@350ed814 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:23, skipping insertion in model container [2021-11-07 00:56:23,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:56:23" (1/1) ... [2021-11-07 00:56:23,334 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:56:23,412 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:56:23,884 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-2.i[33021,33034] [2021-11-07 00:56:24,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:56:24,123 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 00:56:24,138 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:56:24,181 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-2.i[33021,33034] [2021-11-07 00:56:24,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:56:24,298 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 00:56:24,323 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-2.i[33021,33034] [2021-11-07 00:56:24,423 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:56:24,480 INFO L208 MainTranslator]: Completed translation [2021-11-07 00:56:24,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:24 WrapperNode [2021-11-07 00:56:24,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:56:24,482 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 00:56:24,482 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 00:56:24,482 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 00:56:24,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:24" (1/1) ... [2021-11-07 00:56:24,561 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:24" (1/1) ... [2021-11-07 00:56:24,668 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 00:56:24,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 00:56:24,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 00:56:24,670 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 00:56:24,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:24" (1/1) ... [2021-11-07 00:56:24,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:24" (1/1) ... [2021-11-07 00:56:24,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:24" (1/1) ... [2021-11-07 00:56:24,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:24" (1/1) ... [2021-11-07 00:56:24,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:24" (1/1) ... [2021-11-07 00:56:24,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:24" (1/1) ... [2021-11-07 00:56:24,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:24" (1/1) ... [2021-11-07 00:56:24,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 00:56:24,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 00:56:24,844 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 00:56:24,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 00:56:24,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:24" (1/1) ... [2021-11-07 00:56:24,852 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:56:24,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:56:24,880 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 00:56:24,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 00:56:24,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 00:56:24,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 00:56:24,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 00:56:24,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 00:56:24,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 00:56:24,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 00:56:24,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 00:56:24,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 00:56:24,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 00:56:24,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 00:56:24,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 00:56:36,109 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 00:56:36,110 INFO L299 CfgBuilder]: Removed 107 assume(true) statements. [2021-11-07 00:56:36,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:56:36 BoogieIcfgContainer [2021-11-07 00:56:36,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 00:56:36,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 00:56:36,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 00:56:36,118 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 00:56:36,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:56:23" (1/3) ... [2021-11-07 00:56:36,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f103edb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:56:36, skipping insertion in model container [2021-11-07 00:56:36,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:24" (2/3) ... [2021-11-07 00:56:36,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f103edb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:56:36, skipping insertion in model container [2021-11-07 00:56:36,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:56:36" (3/3) ... [2021-11-07 00:56:36,122 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test4-2.i [2021-11-07 00:56:36,127 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 00:56:36,127 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-07 00:56:36,179 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 00:56:36,185 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 00:56:36,185 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-07 00:56:36,207 INFO L276 IsEmpty]: Start isEmpty. Operand has 250 states, 239 states have (on average 1.7238493723849373) internal successors, (412), 249 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:56:36,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 00:56:36,212 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:56:36,213 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:56:36,214 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 00:56:36,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:56:36,220 INFO L85 PathProgramCache]: Analyzing trace with hash 889550569, now seen corresponding path program 1 times [2021-11-07 00:56:36,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:56:36,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2021696947] [2021-11-07 00:56:36,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:56:36,234 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:56:36,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:56:36,237 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:56:36,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 00:56:36,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:56:36,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 00:56:36,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:56:36,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:56:36,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:56:36,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:56:36,608 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:56:36,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2021696947] [2021-11-07 00:56:36,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2021696947] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:56:36,610 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:56:36,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 00:56:36,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179022504] [2021-11-07 00:56:36,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 00:56:36,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:56:36,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 00:56:36,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 00:56:36,647 INFO L87 Difference]: Start difference. First operand has 250 states, 239 states have (on average 1.7238493723849373) internal successors, (412), 249 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:56:36,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:56:36,706 INFO L93 Difference]: Finished difference Result 498 states and 822 transitions. [2021-11-07 00:56:36,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 00:56:36,708 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 00:56:36,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:56:36,728 INFO L225 Difference]: With dead ends: 498 [2021-11-07 00:56:36,728 INFO L226 Difference]: Without dead ends: 217 [2021-11-07 00:56:36,736 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 00:56:36,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-07 00:56:36,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-07 00:56:36,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 207 states have (on average 1.3623188405797102) internal successors, (282), 216 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:56:36,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 282 transitions. [2021-11-07 00:56:36,783 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 282 transitions. Word has length 8 [2021-11-07 00:56:36,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:56:36,784 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 282 transitions. [2021-11-07 00:56:36,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:56:36,784 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 282 transitions. [2021-11-07 00:56:36,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 00:56:36,785 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:56:36,785 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:56:36,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 00:56:36,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:56:36,997 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 00:56:36,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:56:36,998 INFO L85 PathProgramCache]: Analyzing trace with hash 921152950, now seen corresponding path program 1 times [2021-11-07 00:56:36,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:56:37,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1207302411] [2021-11-07 00:56:37,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:56:37,001 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:56:37,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:56:37,003 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:56:37,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 00:56:37,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:56:37,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:56:37,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:56:37,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:56:37,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:56:37,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:56:37,342 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:56:37,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1207302411] [2021-11-07 00:56:37,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1207302411] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:56:37,344 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:56:37,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 00:56:37,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583433589] [2021-11-07 00:56:37,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:56:37,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:56:37,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:56:37,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:56:37,353 INFO L87 Difference]: Start difference. First operand 217 states and 282 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:56:37,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:56:37,630 INFO L93 Difference]: Finished difference Result 433 states and 564 transitions. [2021-11-07 00:56:37,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:56:37,631 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 00:56:37,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:56:37,635 INFO L225 Difference]: With dead ends: 433 [2021-11-07 00:56:37,635 INFO L226 Difference]: Without dead ends: 388 [2021-11-07 00:56:37,636 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:56:37,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-11-07 00:56:37,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 388. [2021-11-07 00:56:37,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 378 states have (on average 1.3412698412698412) internal successors, (507), 387 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:56:37,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 507 transitions. [2021-11-07 00:56:37,667 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 507 transitions. Word has length 8 [2021-11-07 00:56:37,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:56:37,667 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 507 transitions. [2021-11-07 00:56:37,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:56:37,668 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 507 transitions. [2021-11-07 00:56:37,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-07 00:56:37,677 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:56:37,678 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:56:37,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 00:56:37,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:56:37,893 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 00:56:37,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:56:37,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1731820508, now seen corresponding path program 1 times [2021-11-07 00:56:37,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:56:37,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [143615527] [2021-11-07 00:56:37,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:56:37,900 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:56:37,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:56:37,901 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:56:37,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 00:56:38,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:56:38,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:56:38,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:56:39,246 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-07 00:56:39,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:56:39,930 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-07 00:56:39,931 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:56:39,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [143615527] [2021-11-07 00:56:39,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [143615527] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:56:39,931 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:56:39,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 00:56:39,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161270592] [2021-11-07 00:56:39,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 00:56:39,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:56:39,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 00:56:39,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 00:56:39,934 INFO L87 Difference]: Start difference. First operand 388 states and 507 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:56:40,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:56:40,092 INFO L93 Difference]: Finished difference Result 776 states and 1020 transitions. [2021-11-07 00:56:40,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:56:40,093 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2021-11-07 00:56:40,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:56:40,095 INFO L225 Difference]: With dead ends: 776 [2021-11-07 00:56:40,096 INFO L226 Difference]: Without dead ends: 396 [2021-11-07 00:56:40,098 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 00:56:40,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-11-07 00:56:40,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 394. [2021-11-07 00:56:40,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 384 states have (on average 1.2942708333333333) internal successors, (497), 393 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:56:40,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 497 transitions. [2021-11-07 00:56:40,136 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 497 transitions. Word has length 204 [2021-11-07 00:56:40,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:56:40,136 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 497 transitions. [2021-11-07 00:56:40,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:56:40,137 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 497 transitions. [2021-11-07 00:56:40,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-07 00:56:40,151 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:56:40,152 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:56:40,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 00:56:40,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:56:40,369 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 00:56:40,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:56:40,370 INFO L85 PathProgramCache]: Analyzing trace with hash -810577396, now seen corresponding path program 1 times [2021-11-07 00:56:40,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:56:40,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2107852265] [2021-11-07 00:56:40,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:56:40,373 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:56:40,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:56:40,374 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:56:40,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 00:56:41,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:56:41,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 00:56:41,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:56:41,764 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-07 00:56:41,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:56:42,861 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-07 00:56:42,862 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:56:42,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2107852265] [2021-11-07 00:56:42,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2107852265] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:56:42,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:56:42,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 7] imperfect sequences [] total 9 [2021-11-07 00:56:42,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354310576] [2021-11-07 00:56:42,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 00:56:42,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:56:42,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 00:56:42,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 00:56:42,865 INFO L87 Difference]: Start difference. First operand 394 states and 497 transitions. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:56:42,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:56:42,985 INFO L93 Difference]: Finished difference Result 745 states and 947 transitions. [2021-11-07 00:56:42,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:56:42,986 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2021-11-07 00:56:42,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:56:42,989 INFO L225 Difference]: With dead ends: 745 [2021-11-07 00:56:42,989 INFO L226 Difference]: Without dead ends: 382 [2021-11-07 00:56:42,990 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 00:56:42,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-11-07 00:56:43,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2021-11-07 00:56:43,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 372 states have (on average 1.282258064516129) internal successors, (477), 381 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:56:43,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 477 transitions. [2021-11-07 00:56:43,004 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 477 transitions. Word has length 204 [2021-11-07 00:56:43,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:56:43,005 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 477 transitions. [2021-11-07 00:56:43,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:56:43,005 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 477 transitions. [2021-11-07 00:56:43,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-07 00:56:43,008 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:56:43,009 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:56:43,034 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-07 00:56:43,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:56:43,224 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 00:56:43,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:56:43,224 INFO L85 PathProgramCache]: Analyzing trace with hash 2097413136, now seen corresponding path program 1 times [2021-11-07 00:56:43,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:56:43,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1389120802] [2021-11-07 00:56:43,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:56:43,226 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:56:43,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:56:43,227 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:56:43,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 00:56:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:56:44,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:56:44,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:56:44,885 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-07 00:56:44,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:56:45,687 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-07 00:56:45,687 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:56:45,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1389120802] [2021-11-07 00:56:45,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1389120802] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:56:45,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:56:45,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 00:56:45,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556025467] [2021-11-07 00:56:45,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:56:45,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:56:45,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:56:45,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:56:45,691 INFO L87 Difference]: Start difference. First operand 382 states and 477 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:56:46,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:56:46,034 INFO L93 Difference]: Finished difference Result 715 states and 902 transitions. [2021-11-07 00:56:46,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:56:46,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2021-11-07 00:56:46,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:56:46,045 INFO L225 Difference]: With dead ends: 715 [2021-11-07 00:56:46,045 INFO L226 Difference]: Without dead ends: 380 [2021-11-07 00:56:46,046 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:56:46,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-11-07 00:56:46,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2021-11-07 00:56:46,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 370 states have (on average 1.281081081081081) internal successors, (474), 379 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:56:46,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 474 transitions. [2021-11-07 00:56:46,060 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 474 transitions. Word has length 204 [2021-11-07 00:56:46,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:56:46,060 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 474 transitions. [2021-11-07 00:56:46,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:56:46,061 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 474 transitions. [2021-11-07 00:56:46,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-07 00:56:46,064 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:56:46,064 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:56:46,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 00:56:46,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:56:46,303 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 00:56:46,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:56:46,304 INFO L85 PathProgramCache]: Analyzing trace with hash -117938176, now seen corresponding path program 1 times [2021-11-07 00:56:46,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:56:46,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1171632515] [2021-11-07 00:56:46,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:56:46,305 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:56:46,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:56:46,306 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:56:46,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 00:56:47,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:56:47,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:56:47,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:56:47,872 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-07 00:56:47,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:56:48,496 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-07 00:56:48,496 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:56:48,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1171632515] [2021-11-07 00:56:48,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1171632515] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:56:48,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:56:48,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 00:56:48,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669457194] [2021-11-07 00:56:48,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:56:48,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:56:48,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:56:48,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:56:48,500 INFO L87 Difference]: Start difference. First operand 380 states and 474 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:56:48,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:56:48,643 INFO L93 Difference]: Finished difference Result 731 states and 930 transitions. [2021-11-07 00:56:48,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:56:48,647 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 211 [2021-11-07 00:56:48,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:56:48,653 INFO L225 Difference]: With dead ends: 731 [2021-11-07 00:56:48,653 INFO L226 Difference]: Without dead ends: 392 [2021-11-07 00:56:48,655 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:56:48,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-11-07 00:56:48,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2021-11-07 00:56:48,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 382 states have (on average 1.2722513089005236) internal successors, (486), 391 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:56:48,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 486 transitions. [2021-11-07 00:56:48,676 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 486 transitions. Word has length 211 [2021-11-07 00:56:48,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:56:48,677 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 486 transitions. [2021-11-07 00:56:48,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:56:48,677 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 486 transitions. [2021-11-07 00:56:48,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-11-07 00:56:48,681 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:56:48,681 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:56:48,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 00:56:48,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:56:48,896 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 00:56:48,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:56:48,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1390117557, now seen corresponding path program 1 times [2021-11-07 00:56:48,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:56:48,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1949760827] [2021-11-07 00:56:48,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:56:48,899 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:56:48,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:56:48,900 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:56:48,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 00:56:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:56:49,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 00:56:49,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:56:50,588 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-07 00:56:50,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:56:51,320 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-07 00:56:51,321 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:56:51,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1949760827] [2021-11-07 00:56:51,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1949760827] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:56:51,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1328676005] [2021-11-07 00:56:51,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:56:51,321 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 00:56:51,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 00:56:51,324 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 00:56:51,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 00:56:52,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:56:52,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 00:56:52,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:56:53,050 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-07 00:56:53,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:56:53,770 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-07 00:56:53,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1328676005] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:56:53,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 00:56:53,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 5] imperfect sequences [5, 5] total 11 [2021-11-07 00:56:53,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741205643] [2021-11-07 00:56:53,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 00:56:53,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:56:53,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 00:56:53,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-07 00:56:53,775 INFO L87 Difference]: Start difference. First operand 392 states and 486 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:56:53,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:56:53,984 INFO L93 Difference]: Finished difference Result 729 states and 920 transitions. [2021-11-07 00:56:53,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:56:53,985 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 214 [2021-11-07 00:56:53,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:56:53,991 INFO L225 Difference]: With dead ends: 729 [2021-11-07 00:56:53,992 INFO L226 Difference]: Without dead ends: 434 [2021-11-07 00:56:53,993 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 852 GetRequests, 843 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-07 00:56:53,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-11-07 00:56:54,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 432. [2021-11-07 00:56:54,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 422 states have (on average 1.2464454976303319) internal successors, (526), 431 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:56:54,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 526 transitions. [2021-11-07 00:56:54,017 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 526 transitions. Word has length 214 [2021-11-07 00:56:54,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:56:54,018 INFO L470 AbstractCegarLoop]: Abstraction has 432 states and 526 transitions. [2021-11-07 00:56:54,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:56:54,019 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 526 transitions. [2021-11-07 00:56:54,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-11-07 00:56:54,024 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:56:54,024 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:56:54,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-07 00:56:54,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 00:56:54,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:56:54,431 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 00:56:54,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:56:54,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1491793581, now seen corresponding path program 1 times [2021-11-07 00:56:54,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:56:54,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1635190490] [2021-11-07 00:56:54,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:56:54,433 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:56:54,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:56:54,436 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:56:54,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 00:56:55,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:56:55,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 00:56:55,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:56:56,263 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-07 00:56:56,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:56:56,909 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-07 00:56:56,909 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:56:56,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1635190490] [2021-11-07 00:56:56,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1635190490] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:56:56,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1728205408] [2021-11-07 00:56:56,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:56:56,912 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 00:56:56,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 00:56:56,914 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 00:56:56,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 00:56:58,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:56:58,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:56:58,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:00,442 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-07 00:57:00,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:02,195 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-07 00:57:02,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1728205408] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:57:02,195 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 00:57:02,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 00:57:02,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117768331] [2021-11-07 00:57:02,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:57:02,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:57:02,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:57:02,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 00:57:02,199 INFO L87 Difference]: Start difference. First operand 432 states and 526 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:03,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:57:03,112 INFO L93 Difference]: Finished difference Result 708 states and 867 transitions. [2021-11-07 00:57:03,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:57:03,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 214 [2021-11-07 00:57:03,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:57:03,116 INFO L225 Difference]: With dead ends: 708 [2021-11-07 00:57:03,116 INFO L226 Difference]: Without dead ends: 430 [2021-11-07 00:57:03,117 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 852 GetRequests, 845 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 00:57:03,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2021-11-07 00:57:03,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 430. [2021-11-07 00:57:03,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 420 states have (on average 1.2452380952380953) internal successors, (523), 429 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:03,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 523 transitions. [2021-11-07 00:57:03,135 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 523 transitions. Word has length 214 [2021-11-07 00:57:03,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:57:03,136 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 523 transitions. [2021-11-07 00:57:03,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:03,137 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 523 transitions. [2021-11-07 00:57:03,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-07 00:57:03,140 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:57:03,141 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:57:03,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2021-11-07 00:57:03,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 00:57:03,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:57:03,555 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 00:57:03,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:57:03,555 INFO L85 PathProgramCache]: Analyzing trace with hash -747559960, now seen corresponding path program 1 times [2021-11-07 00:57:03,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:57:03,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1731404755] [2021-11-07 00:57:03,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:03,557 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:57:03,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:57:03,558 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:57:03,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 00:57:05,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:05,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 00:57:05,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:05,866 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-07 00:57:05,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:06,548 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-07 00:57:06,548 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:57:06,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1731404755] [2021-11-07 00:57:06,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1731404755] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:57:06,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1326114990] [2021-11-07 00:57:06,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:06,550 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 00:57:06,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 00:57:06,551 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 00:57:06,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-07 00:57:08,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:08,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 00:57:08,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:09,126 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-07 00:57:09,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:09,715 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-07 00:57:09,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1326114990] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:57:09,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 00:57:09,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 11 [2021-11-07 00:57:09,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099796854] [2021-11-07 00:57:09,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 00:57:09,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:57:09,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 00:57:09,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-07 00:57:09,718 INFO L87 Difference]: Start difference. First operand 430 states and 523 transitions. Second operand has 5 states, 5 states have (on average 37.2) internal successors, (186), 5 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:09,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:57:09,868 INFO L93 Difference]: Finished difference Result 739 states and 911 transitions. [2021-11-07 00:57:09,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:57:09,869 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.2) internal successors, (186), 5 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 224 [2021-11-07 00:57:09,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:57:09,873 INFO L225 Difference]: With dead ends: 739 [2021-11-07 00:57:09,873 INFO L226 Difference]: Without dead ends: 398 [2021-11-07 00:57:09,874 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 893 GetRequests, 883 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-07 00:57:09,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-11-07 00:57:09,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 396. [2021-11-07 00:57:09,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 386 states have (on average 1.2098445595854923) internal successors, (467), 395 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:09,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 467 transitions. [2021-11-07 00:57:09,893 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 467 transitions. Word has length 224 [2021-11-07 00:57:09,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:57:09,894 INFO L470 AbstractCegarLoop]: Abstraction has 396 states and 467 transitions. [2021-11-07 00:57:09,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.2) internal successors, (186), 5 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:09,894 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 467 transitions. [2021-11-07 00:57:09,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-07 00:57:09,898 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:57:09,898 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:57:09,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-07 00:57:10,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 00:57:10,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:57:10,307 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 00:57:10,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:57:10,308 INFO L85 PathProgramCache]: Analyzing trace with hash 948450308, now seen corresponding path program 1 times [2021-11-07 00:57:10,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:57:10,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933680053] [2021-11-07 00:57:10,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:10,309 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:57:10,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:57:10,311 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:57:10,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 00:57:11,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:11,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 00:57:11,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:12,502 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-07 00:57:12,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:13,088 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-07 00:57:13,088 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:57:13,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933680053] [2021-11-07 00:57:13,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1933680053] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:57:13,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1007397083] [2021-11-07 00:57:13,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:13,088 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 00:57:13,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 00:57:13,089 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 00:57:13,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 00:57:15,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:15,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 00:57:15,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:15,973 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-07 00:57:15,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:16,513 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-07 00:57:16,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1007397083] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:57:16,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198341069] [2021-11-07 00:57:16,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:16,514 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:57:16,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:57:16,525 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:57:16,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-07 00:57:18,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:18,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 00:57:18,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:19,363 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 00:57:19,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:20,487 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 00:57:20,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198341069] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:57:20,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 00:57:20,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 14 [2021-11-07 00:57:20,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315735998] [2021-11-07 00:57:20,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 00:57:20,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:57:20,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 00:57:20,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-07 00:57:20,492 INFO L87 Difference]: Start difference. First operand 396 states and 467 transitions. Second operand has 14 states, 14 states have (on average 43.0) internal successors, (602), 14 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:25,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:57:25,558 INFO L93 Difference]: Finished difference Result 1525 states and 1866 transitions. [2021-11-07 00:57:25,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-07 00:57:25,559 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 43.0) internal successors, (602), 14 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 224 [2021-11-07 00:57:25,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:57:25,565 INFO L225 Difference]: With dead ends: 1525 [2021-11-07 00:57:25,566 INFO L226 Difference]: Without dead ends: 1172 [2021-11-07 00:57:25,568 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1378 GetRequests, 1328 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 751 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=689, Invalid=1963, Unknown=0, NotChecked=0, Total=2652 [2021-11-07 00:57:25,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2021-11-07 00:57:25,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1172. [2021-11-07 00:57:25,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 1162 states have (on average 1.1764199655765921) internal successors, (1367), 1171 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:25,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1367 transitions. [2021-11-07 00:57:25,623 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1367 transitions. Word has length 224 [2021-11-07 00:57:25,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:57:25,624 INFO L470 AbstractCegarLoop]: Abstraction has 1172 states and 1367 transitions. [2021-11-07 00:57:25,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 43.0) internal successors, (602), 14 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:25,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1367 transitions. [2021-11-07 00:57:25,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2021-11-07 00:57:25,630 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:57:25,631 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:57:25,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 00:57:25,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-07 00:57:26,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-07 00:57:26,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 00:57:26,252 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 00:57:26,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:57:26,253 INFO L85 PathProgramCache]: Analyzing trace with hash 330999072, now seen corresponding path program 2 times [2021-11-07 00:57:26,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:57:26,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1354628143] [2021-11-07 00:57:26,256 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 00:57:26,256 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:57:26,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:57:26,258 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:57:26,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 00:57:28,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 00:57:28,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 00:57:29,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 00:57:29,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:30,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 181 proven. 21 refuted. 0 times theorem prover too weak. 1308 trivial. 0 not checked. [2021-11-07 00:57:30,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:32,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 181 proven. 21 refuted. 0 times theorem prover too weak. 1308 trivial. 0 not checked. [2021-11-07 00:57:32,725 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:57:32,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1354628143] [2021-11-07 00:57:32,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1354628143] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:57:32,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2053936105] [2021-11-07 00:57:32,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 00:57:32,726 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 00:57:32,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 00:57:32,734 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 00:57:32,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-07 00:57:36,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 00:57:36,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 00:57:36,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 00:57:36,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:38,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 181 proven. 21 refuted. 0 times theorem prover too weak. 1308 trivial. 0 not checked. [2021-11-07 00:57:38,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:39,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 181 proven. 21 refuted. 0 times theorem prover too weak. 1308 trivial. 0 not checked. [2021-11-07 00:57:39,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2053936105] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:57:39,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118536635] [2021-11-07 00:57:39,890 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 00:57:39,890 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:57:39,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:57:39,903 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:57:39,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-07 00:57:43,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 00:57:43,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 00:57:43,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 00:57:43,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:44,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 181 proven. 6 refuted. 0 times theorem prover too weak. 1323 trivial. 0 not checked. [2021-11-07 00:57:44,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:46,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 181 proven. 6 refuted. 0 times theorem prover too weak. 1323 trivial. 0 not checked. [2021-11-07 00:57:46,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118536635] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:57:46,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 00:57:46,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 6, 6] total 23 [2021-11-07 00:57:46,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137927585] [2021-11-07 00:57:46,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 00:57:46,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:57:46,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 00:57:46,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=350, Unknown=0, NotChecked=0, Total=506 [2021-11-07 00:57:46,778 INFO L87 Difference]: Start difference. First operand 1172 states and 1367 transitions. Second operand has 23 states, 23 states have (on average 8.347826086956522) internal successors, (192), 23 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:52,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:57:52,685 INFO L93 Difference]: Finished difference Result 3445 states and 4227 transitions. [2021-11-07 00:57:52,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 00:57:52,687 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 8.347826086956522) internal successors, (192), 23 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 628 [2021-11-07 00:57:52,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:57:52,698 INFO L225 Difference]: With dead ends: 3445 [2021-11-07 00:57:52,699 INFO L226 Difference]: Without dead ends: 2320 [2021-11-07 00:57:52,701 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3776 GetRequests, 3748 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=311, Invalid=559, Unknown=0, NotChecked=0, Total=870 [2021-11-07 00:57:52,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2021-11-07 00:57:52,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 1412. [2021-11-07 00:57:52,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1402 states have (on average 1.1547788873038516) internal successors, (1619), 1411 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:52,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 1619 transitions. [2021-11-07 00:57:52,807 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 1619 transitions. Word has length 628 [2021-11-07 00:57:52,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:57:52,807 INFO L470 AbstractCegarLoop]: Abstraction has 1412 states and 1619 transitions. [2021-11-07 00:57:52,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 8.347826086956522) internal successors, (192), 23 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:52,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 1619 transitions. [2021-11-07 00:57:52,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2021-11-07 00:57:52,823 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:57:52,823 INFO L513 BasicCegarLoop]: trace histogram [14, 14, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:57:52,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-11-07 00:57:53,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-07 00:57:53,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-07 00:57:53,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:57:53,437 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 00:57:53,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:57:53,438 INFO L85 PathProgramCache]: Analyzing trace with hash -815531232, now seen corresponding path program 3 times [2021-11-07 00:57:53,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:57:53,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1266411173] [2021-11-07 00:57:53,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 00:57:53,441 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:57:53,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:57:53,442 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:57:53,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4517c4be-208b-46cb-bcc9-2240d15849c2/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process